Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
With the onset of May, Winthrop Harbor's average high-temperature experiences a rise, moving from April's fresh 50.7°F (10.4°C) to a refreshing 61.3°F (16.3°C). Winthrop Harbor's average low-temperature during May nights is observed to be a frosty 48.6°F (9.2°C).Humidity
In Winthrop Harbor, the average relative humidity in May is 80%.Rainfall
In May, the rain falls for 16 days. Throughout May, 2.48" (63mm) of precipitation is accumulated. In Winthrop Harbor, Illinois, during the entire year, the rain falls for 142.5 days and collects up to 21.5" (546mm) of precipitation.Snowfall
In Winthrop Harbor, snow does not fall in May through September.Daylight
In Winthrop Harbor, the average length of the day in May is 14h and 38min.On the first day of the month, sunrise is at 5:44 am and sunset at 7:51 pm. On the last day of May, in Winthrop Harbor, sunrise is at 5:16 am and sunset at 8:21 pm CDT.
Sunshine
In Winthrop Harbor, the average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Take precautions - Protection against sun damage is advised. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Winthrop Harbor?
What is the average humidity in May in Winthrop Harbor?
How many days does it rain in May in Winthrop Harbor?
When it does not snow in Winthrop Harbor?
Does it snow in Winthrop Harbor in May?
How many hours of daylight does Winthrop Harbor have in May?
What time are sunrise and sunset in May in Winthrop Harbor?
How long on average sun shines in May in Winthrop Harbor?
What is the UV index reading in May in Winthrop Harbor?
Average temperature in May
Winthrop Harbor, IL
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 48.6°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in May
Winthrop Harbor, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Winthrop Harbor, IL
- Average wind speed in May: 9.2mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in May
Winthrop Harbor, IL
- Average humidity in May: 80%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in May
Winthrop Harbor, IL
- Average rainfall in May: 2.48"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in May
Winthrop Harbor, IL
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in May
Winthrop Harbor, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Winthrop Harbor, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Winthrop Harbor, IL
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Winthrop Harbor, IL
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in May
Winthrop Harbor, IL
- Average UV index in May: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Winthrop Harbor, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Winthrop Harbor, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Winthrop Harbor, Illinois, USA
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